Idris not worried about proving himself

A rejuvenated Jamil Idris says he has nothing to prove to anyone but himself as he prepares to return to the NRL.

The former NSW and Australian representative was granted a release from the final year of his contract in 2016 and hasn't played an NRL game since April 2015, when he suffered a season-ending knee injury.

Now at Wests Tigers, his fourth NRL club, Idris 26, has experienced an eventful journey since making his debut for the Bulldogs in 2008, just over a month after his 18th birthday.

Among the highs were playing for NSW in 2010 and Australia in 2011, while the lows included being stood down by Penrith for an alcohol-related incident in 2014 when he was also believed to be suffering depression.

"People are always going to say I have to prove myself but I don't have to prove myself to anyone but myself," Idris said on Monday.

The centre's weight and fitness have been topics of discussion in the past but he is placing a big emphasis on the latter.

"To get to my peak fitness, that's going to be a massive goal," he said.